Improved vacuum mixing system

Abstract

The invention discloses an improved vacuum mixing system which comprises a vacuum mixing tank, a vacuum pump set, a plurality of powder feeding pipelines, a liquid feeding pipeline and a material circulating pipeline, and the powder feeding pipelines are connected with feeding ports formed in the vacuum mixing tank. The liquid feeding pipeline is connected with a liquid inlet formed in the vacuum mixing tank, a weighing sensor is arranged at the bottom of the vacuum mixing tank, one end of the material circulating pipeline is connected with a discharging port formed in the vacuum mixing tank, and the other end of the material circulating pipeline is connected with the heat exchange assembly and the casein conversion tank. The connecting mode of the feeding valve and the vacuum mixing tank is redesigned, the feeding valve is directly welded to the tank wall of the vacuum mixing tank, and the problems that mixing is not uniform, water is stored, and a powder inlet is blocked due to powder moisture are solved; the flow blocking cover and the spoiler are arranged in the vacuum mixing tank, so that liquid can be guided into the shearing head, and self-absorption is realized under the function of spoiler, so that the mixing effect of the material liquid is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum mixing, and in particular to an improved vacuum mixing system. Background Art

[0002] The vacuum mixing system is a system that absorbs liquids and powders under the negative pressure of a mixing tank. The feed amount is controlled by a weight sensor. When the liquid reaches the set weight, the valve is closed to stop feeding. In this process, the liquid and material are mixed in the mixing tank. It is widely used in chemical, pharmaceutical, food processing, pharmaceutical, agricultural and other fields.

[0003] In the existing vacuum mixing system, such as the vacuum conveying and mixing system disclosed in patent CN111318203A and the vacuum high-speed mixing tank disclosed in patent CN209663193U, although the vacuum mixing function can be realized, the existing process still has various problems in the production process and cannot meet the actual needs. The following problems need to be improved: First, the powder inlet of the mixing tank is set at the bottom of the tank, and the valve pipe is usually welded to the outer wall of the tank, which will cause a dead angle in the mixing tank during the material suction and mixing process, resulting in uneven mixing. In addition, the existing feeding method is intermittent feeding, and there will be a certain amount of water behind the valve. When it is opened for the second time, the powder will be wetted, causing the powder at the valve to block the powder inlet; Second, there is a lack of turbulent structure inside the mixing tank (or only two stainless steel vertical plates are set), which makes it impossible to disperse and mix the liquid; 3. During vacuum suction, the suction direction of the mixed liquid is consistent with the vacuum inlet. When the valve is opened, the liquid is sprayed to the suction port of the vacuum pump on the upper part of the tank, and then sucked to the inlet of the vacuum pump, and enters the interior of the vacuum pump through the pipeline, causing damage to the equipment and loss of liquid. Fourth, in terms of technology, the existing mixing system directly transports the materials to the next process after mixing, and cannot realize the casein conversion function in the mixing process; 5. During the material circulation process, the system does not achieve shear emulsification, and the material particles cannot be fully mixed; 6. The mixing tank needs to be cleaned together with the heat exchanger during the cleaning process. The circulation pipeline is long, the cleaning time is long, the efficiency is low, and the heat exchanger cleaning water consumption is large, resulting in energy waste.

[0004] In summary, the existing vacuum mixing system needs to be improved. Summary of the invention

[0005] To solve the above technical problems, the present invention discloses an improved vacuum mixing system, comprising a vacuum mixing tank, a vacuum pump group, a plurality of powder feeding pipes, a liquid feeding pipe and a material circulation pipe, wherein the vacuum pump group is connected to a vacuum suction port arranged on the top of the mixing tank, and the plurality of powder feeding pipes are respectively connected to the feeding ports arranged on the vacuum mixing tank, and each of the powder feeding pipes is provided with a first feeding valve, the liquid feeding pipe is connected to the liquid inlet arranged on the vacuum mixing tank, and the liquid feeding pipe is provided with a second feeding valve, and weighing sensors are provided on the tank bottom and the liquid feeding pipe of the vacuum mixing tank, one end of the material circulation pipe is connected to the discharge port arranged on the vacuum mixing tank, and the other end is connected to the heat exchange component and the casein conversion tank, and the material circulation pipe is provided with a material pump and a shear emulsification pump.

[0006] Furthermore, the liquid feed pipeline is connected to a cleaning component, which includes a CIP control unit, a pre-water cleaning tank, a pre-alkaline water cleaning tank, a pre-acid water cleaning tank and a first heat exchanger, the water inlet of the pre-water cleaning tank is connected to a municipal water source, and the water outlet is connected to a cleaning inlet of a vacuum mixing tank; the water inlet of the pre-alkaline water cleaning tank is connected to a concentrated alkaline water source, and the water outlet is connected to the cleaning inlet of a vacuum mixing tank; the water inlet of the pre-acid water cleaning tank is connected to a concentrated acid water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank; the water inlet of the first heat exchanger is respectively connected to the pre-water cleaning tank, the pre-alkaline water cleaning tank, and the pre-acid water cleaning tank, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank, and the CIP control unit is respectively connected to the pre-water cleaning tank, the pre-alkaline water cleaning tank, the pre-acid water cleaning tank and the first heat exchanger through electrical signals.

[0007] Furthermore, the heat exchange assembly includes a second heat exchanger, a third heat exchanger, and a bypass pipe connected in parallel, the material inlets of the second heat exchanger, the third heat exchanger, and the bypass pipe are all connected to the vacuum mixing tank, the material outlets are all connected to the back-end equipment, the medium inlet and outlet of the second heat exchanger are connected to the fourth heat exchanger, and the medium inlet and outlet of the third heat exchanger are connected to the ice water source.

[0008] Furthermore, the water inlet of the fourth heat exchanger is connected to the steam heat source, the water outlet is connected to the condensate return room, the medium inlet of the fourth heat exchanger is connected to the municipal water source, and the medium outlet is connected to the medium inlet of the second heat exchanger.

[0009] Furthermore, a plurality of casein conversion tanks are connected to the rear end of the material circulation pipeline, the air inlet at the top of the casein conversion tank is connected to a nitrogen source, the discharge port at the bottom of the casein conversion tank is connected to the return port of the vacuum mixing tank through a return pipe, and a circulation pump is provided on the return pipe.

[0010] Furthermore, an arc-shaped baffle cover is provided at the powder inlet at the bottom of the vacuum mixing tank, and a plurality of inclined spoilers are provided at intervals in a circumferential manner on the inner wall of the bottom of the vacuum mixing tank.

[0011] Furthermore, a feed valve is welded on the tank wall outside the powder inlet.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Redesign the connection method between the feed valve and the vacuum mixing tank, and directly weld the feed valve to the tank wall of the vacuum mixing tank, so that there is no dead angle, no wetting of the powder, and no water residue during the powder adding process, solving the problems of uneven mixing, water accumulation, and clogging of the powder inlet due to moisture in the powder; Second, a baffle and a spoiler are arranged in the vacuum mixing tank, which can guide the liquid to the inside of the shear head, realize self-priming while realizing the function of spoiling, thereby improving the mixing effect of the material and liquid; 3. Increase the function of casein conversion and shear emulsification, so that the material particles are finer and the powder and liquid are mixed more fully and evenly; Fourth, redesign the mixing path to solve the energy waste caused by long circulation pipeline path, long cleaning time, low efficiency, and large amount of water used for cleaning the heat exchanger during the cleaning process of the vacuum mixing system; 5. Using a CIP cleaning system can improve production efficiency, reduce the risk of cross contamination, and help maintain product quality and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural layout diagram of the present invention; Figure 2 It is a structural layout diagram of the cleaning component in the present invention; Figure 3 It is the structural layout diagram of the casein conversion tank in the present invention; Figure 4 A top view of the internal structure of the vacuum mixing tank of the present invention; Figure 5 It is a partial structural sectional view of the vacuum mixing tank in the present invention.

[0015] Reference numerals: 10-vacuum mixing tank, 11-powder inlet, 12-arc baffle, 13-spoiler, 14-feeding valve, 20-vacuum pump group, 30-powder feeding pipeline, 31-first feeding valve, 32-weighing sensor, 40-liquid feeding pipeline, 41-second feeding valve, 42-bypass pipe, 50-material circulation pipeline, 51-material pump, 52-shear emulsification pump, 60-first heat exchanger, 70-CIP control unit, 80-pre-water cleaning tank, 90-pre-alkaline water cleaning tank, 100-pre-acid water cleaning tank, 110-second heat exchanger, 120-third heat exchanger, 130-fourth heat exchanger, 140-ice water source, 150-casein conversion tank, 160-nitrogen source, 170-return pipeline, 171-circulation pump. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0019] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 As shown, the improved vacuum mixing system in this embodiment includes a vacuum mixing tank 10, a vacuum pump group 20, a plurality of powder feeding pipes 30, a liquid feeding pipe 40 and a material circulation pipe 50; the thick solid line in the figure represents the flow path of the material, the thin solid line represents the flow path of the cleaning water, the dotted line represents the flow path of the steam, and the dotted line represents the electrical control path.

[0021] The vacuum pump group 20 is connected to the vacuum suction port arranged on the top of the mixing tank 10, and multiple powder feeding pipes 30 are respectively connected to the feeding ports arranged on the vacuum mixing tank 10. Each powder feeding pipe 30 is provided with a first feeding valve 31. The liquid feeding pipe 40 is connected to the liquid inlet arranged on the vacuum mixing tank 10. The liquid feeding pipe 40 is provided with a second feeding valve 41. The bottom of the vacuum mixing tank 10 and the liquid feeding pipe 40 are both provided with weighing sensors 32. One end of the material circulation pipe 50 is connected to the discharge port arranged on the vacuum mixing tank 10, and the other end is connected to the heat exchange component. The material circulation pipe 50 is provided with a material pump 51 and a shear emulsification pump 52.

[0022] Various powdered materials such as sugar, non-dairy creamer, vegetable fat powder, etc. can be added to the vacuum mixing tank 10 through multiple powder feeding pipes 30, and the addition amount of various materials can be controlled by the weighing sensor 32; liquid materials such as water, oil, milk, etc. can be added to the vacuum mixing tank 10 through the liquid feeding pipe 40, and the addition amount of various materials can be controlled by the weighing sensor 32.

[0023] The material pump 51 is used to transport the mixed material for subsequent recycling treatment or transportation to the next process; the shear emulsification pump 52 forms strong mechanical and hydraulic shear, liquid layer friction, impact and tearing under the high-speed rotation of its rotor, so that the material is fully dispersed, crushed, emulsified and homogenized, and ejected through the stator slot at the same time, so that the material will become more delicate and promote the fusion of oil and water.

[0024] When cleaning the tank, the hose is connected to the cleaning assembly, such as Figure 2 As shown, the cleaning component includes a first heat exchanger 60, a CIP control unit 70, a pre-water cleaning tank 80, a pre-alkali water cleaning tank 90, and a pre-acid water cleaning tank 100. The water inlet of the pre-water cleaning tank 80 is connected to the municipal water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the water inlet of the pre-alkali water cleaning tank 90 is connected to the concentrated alkali water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the water inlet of the pre-acid water cleaning tank 100 is connected to the concentrated acid water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the water inlet of the first heat exchanger 60 is respectively connected to the pre-water cleaning tank 80, the pre-alkali water cleaning tank 90, and the pre-acid water cleaning tank 100, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the CIP control unit 70 is connected to the first heat exchanger 60, the pre-water cleaning tank 80, the pre-alkali water cleaning tank 90, and the pre-acid water cleaning tank 100 through electrical signals.

[0025] The CIP control unit 70 is electrically connected to the first heat exchanger 60. CIP is the abbreviation of Cleaning-In-Place, which means "cleaning in place". This system thoroughly cleans and disinfects the production line by circulating cleaning agents, disinfectants and clean water. The cleaning and disinfection stock solutions are water, 2.5% alkali, hot water, and 2% acid. The cleaning sequence is clean water-alkaline water-clean water-acid water-hot water. There is no need to disassemble or move the equipment. The CIP cleaning system can improve production efficiency, reduce the risk of cross contamination, and help maintain product quality and safety.

[0026] After production is completed, the CIP cleaning system is connected to the vacuum mixing tank 10 to clean and disinfect the tank body and the inside of the pipeline. The circulation pipeline is short and the cleaning efficiency is high, which solves the problems of long circulation pipeline path, long cleaning time and low efficiency of the traditional mixing system, as well as the energy waste caused by large water consumption for cleaning the heat exchanger.

[0027] The heat exchange component includes a second heat exchanger 110, a third heat exchanger 120, and a bypass pipe 42 connected in parallel. The material inlets of the second heat exchanger 110, the third heat exchanger 120, and the bypass pipe 42 are all connected to the vacuum mixing tank 10, and the material outlets are all connected to the back-end equipment. The medium inlet and outlet of the second heat exchanger 110 is connected to the fourth heat exchanger 130, and the medium inlet and outlet of the third heat exchanger 120 is connected to the ice water source 140.

[0028] The water inlet of the fourth heat exchanger 130 is connected to the steam heat source, the water outlet is connected to the condensate return room, the medium inlet of the fourth heat exchanger 130 is connected to the municipal water source, and the medium outlet is connected to the medium inlet of the second heat exchanger 110 .

[0029] After the purified water is initially heated by the fourth heat exchanger 130, it enters the second heat exchanger 110 to heat the material, and the steam condensed water after heat exchange returns to the condensed water return room; the third heat exchanger 120 is used to cool the material, and the material can be controlled by a valve to enter the second heat exchanger 110 or the third heat exchanger 120 according to different needs.

[0030] like Figure 3 As shown, the rear end of the material circulation pipeline 50 is connected to multiple groups of casein conversion tanks 150, and the air inlet at the top of the casein conversion tank 150 is connected to a nitrogen source 160. Nitrogen can prevent casein from undergoing physical changes due to changes in air pressure during storage, thereby ensuring the stability of product quality.

[0031] Casein is the main protein in cow's milk and goat's milk, and has many physiological functions such as preventing and treating osteoporosis and rickets, regulating blood pressure, treating iron deficiency anemia, magnesium deficiency neuritis, etc. The process of casein conversion in the casein conversion tank 150 is as follows: adding water of a certain temperature to the tank, preparing a quantitative alkaline solution for the first time, adding casein after stirring, and waiting for a certain time; preparing a quantitative alkaline solution for the second time, stirring for a certain time; preparing a quantitative alkaline solution for the third time, stirring for a certain time; finally sampling, testing, temporary storage, and transporting to the next process.

[0032] The discharge port at the bottom of the casein conversion tank 150 is connected to the return port of the vacuum mixing tank 10 through a return pipe 170 , and a circulation pump 171 is provided on the return pipe 170 .

[0033] like Figure 4 As shown, an arc-shaped baffle 12 is provided at the powder inlet 11 at the bottom of the vacuum mixing tank 10, and a plurality of inclined spoilers 13 are provided on the bottom inner wall of the vacuum mixing tank 10 in a circumferential manner, which can guide the liquid to the inside of the shearing head, realize self-priming while realizing the function of spoiling, thereby improving the mixing effect of the feed and liquid.

[0034] like Figure 5 As shown, a feed valve 14 is welded on the tank wall outside the powder inlet 11. The advantage of welding the feed valve 14 on the vacuum mixing tank 10 is that there are no dead corners, no wetting of the powder, and no water residue during the powder adding process, which solves the problems of uneven mixing, water accumulation, and clogging of the powder inlet due to moisture in the powder.

[0035] In summary, the present invention redesigns the connection method between the feed valve and the vacuum mixing tank, and directly welds the feed valve to the tank wall of the vacuum mixing tank, so that there are no dead corners, no wetting of the powder, and no water residue during the powder adding process, which solves the problems of uneven mixing, water accumulation, and clogging of the powder inlet due to moisture in the powder.

[0036] A baffle and a spoiler are arranged in the vacuum mixing tank, which can guide the liquid to the inside of the shearing head, realize self-priming while realizing the function of spoiling, thereby improving the mixing effect of the material and liquid.

[0037] Increase the casein conversion and shear emulsification functions, so that the material particles are finer and the powder and liquid are mixed more fully and evenly.

[0038] The mixing path is redesigned to solve the energy waste caused by the long circulation pipeline path, long cleaning time, low efficiency and large amount of water used for cleaning the heat exchanger during the cleaning process of the vacuum mixing system.

[0039] Using a CIP cleaning system can improve production efficiency, reduce the risk of cross contamination, and help maintain product quality and safety.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. An improved vacuum mixing system, characterized in that: It includes a vacuum mixing tank, a vacuum pump group, a plurality of powder feed pipes, a liquid feed pipe and a material circulation pipe, wherein the vacuum pump group is connected to a vacuum suction port arranged on the top of the mixing tank, and the plurality of powder feed pipes are respectively connected to the feed ports arranged on the vacuum mixing tank, and each of the powder feed pipes is provided with a first feed valve, the liquid feed pipe is connected to the liquid inlet arranged on the vacuum mixing tank, and the liquid feed pipe is provided with a second feed valve, and weighing sensors are provided on the tank bottom of the vacuum mixing tank and the liquid feed pipe, one end of the material circulation pipe is connected to the discharge port arranged on the vacuum mixing tank, and the other end is connected to the heat exchange component and the casein conversion tank, and the material circulation pipe is provided with a material pump and a shear emulsification pump.

2. The improved vacuum mixing system according to claim 1, characterized in that: The liquid feed pipeline is connected to a cleaning component, which includes a CIP control unit, a pre-water cleaning tank, a pre-alkali water cleaning tank, a pre-acid water cleaning tank and a first heat exchanger, wherein the water inlet of the pre-water cleaning tank is connected to a municipal water source, and the water outlet is connected to a cleaning inlet of a vacuum mixing tank; the water inlet of the pre-alkali water cleaning tank is connected to a concentrated alkali water source, and the water outlet is connected to a cleaning inlet of a vacuum mixing tank; the water inlet of the pre-acid water cleaning tank is connected to a concentrated acid water source, and the water outlet is connected to a cleaning inlet of a vacuum mixing tank; the water inlet of the first heat exchanger is respectively connected to the pre-water cleaning tank, the pre-alkali water cleaning tank, and the pre-acid water cleaning tank, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank, and the CIP control unit is respectively connected to the pre-water cleaning tank, the pre-alkali water cleaning tank, the pre-acid water cleaning tank and the first heat exchanger through electrical signals.

3. The improved vacuum mixing system according to claim 1, characterized in that: The heat exchange assembly includes a second heat exchanger, a third heat exchanger, and a bypass pipe connected in parallel. The material inlets of the second heat exchanger, the third heat exchanger, and the bypass pipe are all connected to the vacuum mixing tank, and the material outlets are all connected to the back-end equipment. The medium inlet and outlet of the second heat exchanger are connected to the fourth heat exchanger, and the medium inlet and outlet of the third heat exchanger are connected to the ice water source.

4. The improved vacuum mixing system according to claim 3, characterized in that: The water inlet of the fourth heat exchanger is connected to the steam heat source, the water outlet is connected to the condensed water return room, the medium inlet of the fourth heat exchanger is connected to the municipal water source, and the medium outlet is connected to the medium inlet of the second heat exchanger.

5. The improved vacuum mixing system according to any one of claims 1 to 4, characterized in that: The rear end of the material circulation pipeline is connected to multiple groups of casein conversion tanks, the air inlet at the top of the casein conversion tank is connected to a nitrogen source, the discharge port at the bottom of the casein conversion tank is connected to the return port of the vacuum mixing tank through a return pipeline, and a circulation pump is provided on the return pipeline.

6. The improved vacuum mixing system according to claim 5, characterized in that: An arc-shaped baffle cover is provided at the powder inlet at the bottom of the vacuum mixing tank, and a plurality of inclined spoilers are provided at intervals in a circumferential manner on the inner wall of the bottom of the vacuum mixing tank.

7. The improved vacuum mixing system according to claim 6, characterized in that: A feed valve is welded on the tank wall outside the powder inlet.

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